【Application】Highly adaptable 20MHz active crystal oscillator OT8JI-111-20M for UPS with ±20ppm frequency stability

UPS ( Uninterruptible Power System ), that is, uninterruptible power supply, is the battery and UPS host connection, through the host inverter and other modular circuits will be converted from DC to utility power system equipment, its main purpose is to power outages to provide stable, uninterrupted power supply to the important high-end equipment, precision instruments, computer network systems and so on.

Figure: Block diagram of UPS application

The customer's UPS product needs to use a quartz crystal oscillator with a frequency of 20MHz, 7.0*5.0mm package, and high precision as the clock reference of the main control MCU. Based on the UPS for internal electronic components of high reliability, high stability, heat resistance, anti-electromagnetic interference and other requirements, we recommend customers to use Yangxing active crystal oscillator YSO110TR series, material number: OT8JI-111-20M, typical parameters and indicators are as follows:

YXC recommends active crystal oscillator OT8JI-111-20M in UPS for the following reasons:

① The nominal frequency is 20MHz, which meets the UPS circuit design requirements;

② Normal temperature frequency difference ± 10ppm, total frequency difference ± 30ppm in the full temperature range, high precision and high reliability to ensure long-term normal operation of UPS;

③Compatible with multiple voltages 1.8V~3.3V for better adaptability;

④ -40 ~ +85° wide temperature, high temperature resistance, and still show good accuracy characteristics in the working environment with large temperature difference.